Description:
A vulnerability was reported in Mozilla Thunderbird. A remote user can cause arbitrary code to be executed on the target user's system.

A remote user can send a specially crafted message that, when loaded by the target user's newsreader, will trigger a heap overflow in the processing of canceled newsgroup messages and execute arbitrary code on the target system. The code will run with the privileges of the target user.

Georgi Guninski reported this vulnerability.

Impact:
A remote user can create a newsgroup message that, when loaded by the target user, will execute arbitrary code on the target user's system.